Tire for wheeled vehicles.



Patented July 30, |90I.

A. BUNFIGLIETTI.

UNTTED STATES PATENT OEEICE.

AURELIO BONFIGLIETTI, OF PARIS, FRANCE.

TIRE FOR WHEELED VEHICLES.

SPECIFICATION forming part of Letters Patent No. 679,596, dated July 30,1901.

Application led .l'uly 1,1901. Serial No. 66,723. (No model.)

T0 all whom it' Wray 0072.007011.:

Be it known that I, AURELIO BONEIGLIETTI, a subject of the King ofItaly, and a resident of Paris, France, have invented an Improvement inTires for Wheeled Vehicles, of which the following is a specification.

The present invention relates to an improved form of tire capable oi'being employed for wheels of vehicles in general, but the use of whichis more particularly described in connection with the wheels of autocarsof all kinds. IfIitherto in order to make tires for these vehiclesindia-rubber, leather, and the like have been employed in various forms.Such tires are, however, costly, wear rapidly, and their coefficient ofadherence to the ground is limited. These parts of the wheels play animportant part in the working of autocars. It is therefore important toiind a type which does not possess the drawbacks hereinbefore mentioned.

The improved tire which forms the object of the present application iselastic and resistant. It may be manufactured very economically', and,further, it has a much higher coefficient of adherence to the groundthan the tires at present employed. It is formed of textile filaments,plaited or twisted, formed into strips or cords after a preliminarypreparation, and arranged around a central core formed by laments of thesame nature. These filaments are of some suitable textile material, suchas hemp, jute, ramie, cotton, manila, wool, hair, or the like.

The constitution of this improved tire is shown in the accompanyingdrawings, in which- Figure l is a transverse section of the tire mountedon a wheel-rim. Fig. 2 shows a portion at the moment of manufacture.Fig. 3 is a modification of the method of fixing the tire on the rim.

In view of the new application which is made of them the filamentsundergo the following special treatment: The filaments intended to formthe core are first dried and then immersed in a solution intended topreserve them, such as oils, tar, and the like. In this way a torus orcore o, is formed with these iilaments held in position by a iiexibleband e, metallic wire,

or the like, as shown in Fig. 2 of the drawings. The cord serving ascover is preferably formed of rope-yarn immersed separately inlinseed-oil holding in suspension a certain quantity of minium (redlead) and white lead. The cord being plaited with these threadsimpregnated with agglutinant substance thus becomes itself penetrated atall points by the said substance, so that the iilaments adhere one uponthe other and cannot separate. This cord b is wound around the core inthe form of a spiral with Wide volutes and with several turns. As Fig. 2shows, the winding is done in such a way that the spirals are closelyjuxtaposed. The tire thus completed is mounted under pressure on thefellyj of the wheel covered with its metallic rim f.

This tire is held in its place by means of metal crowns c, placed oneach side and strongly pressed against the rim j and the tire by boltsd.

In the arrangement shown in Fig. l the fastening-bolts d pass throughthe wooden felly j. In the modification shown in Fig. 3, on thecontrary, these bolts are introduced between the rim fand the tire,lifting this latter. This second arrangement affords the advantage ofnot weakening the felly by holes being bored therein and of allowing itto be fitted to an existing wheel without necessitating the latterundergoing any preparation.

It is easy to understand the superiority of a tire thus manufacturedover those at present employed, both as regards its own resistance andits cost of production.

I declare that what I claim is- An improved tire for wheels of vehiclesconsistin g of suitable textile iilaments which have been treated topreserve them, plaited, twisted or otherwise, and wound in juxtaposedspirals around a central core of similar material, substantially ashereinbefore specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

AURELIO BONFIGLIETTI.

Witnesses:

JOSEPH DEBAGE, EDWARD MACLEAN.

